<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div class="headerImg">
        <img src="../assets/heima.png" alt="" />
      </div>
      <div class="headerSpan">
        <span>电商后台管理系统</span>
      </div>
      <div class="headerButton">
        <el-button type="info" @click="loginOut">退出</el-button>
      </div>
    </el-header>
    <!-- 页面主题区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409BFF"
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + '' " v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" @click="saveNavState('/' + subItem.path)" v-for="subItem in item.children" :key="subItem.id">
              <!-- 一级菜单的模板区域 -->
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 模块内容 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    // 左侧菜单数据
    return {
      menulist: [],
      iconObj: {
        125: 'iconfont icon-icon-1',
        103: 'iconfont icon-icon-test',
        101: 'iconfont icon-icon-test1',
        102: 'iconfont icon-icon-test2',
        145: 'iconfont icon-icon-test4'
      },
      // 左侧边框不折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 退出登录方法
    loginOut() {
      window.sessionStorage.clear()
      this.$router.push('/login')
      this.$message.success('退出成功!')
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.console.error(res.meta.msg)
      this.menulist = res.data
      // console.log(this.menulist)
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
      // console.log(this.activePath)
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  width: 100%;
  height: 100%;
}
.el-header {
  padding: 0;
  margin: 0;
  background-color: #373d41;
  // background-color: #fff;
  position: relative;
  .headerImg {
    float: left;
    height: 60px;
    line-height: 60px;
  }
  .headerSpan {
    float: left;
    height: 60px;
    line-height: 60px;
    span {
      color: #fff;
      font-size: 25px;
    }
  }
  .headerButton {
    position: absolute;
    float: left;
    right: 50px;
    bottom: 50%;
    transform: translatey(50%);
  }
}
.el-aside {
  background-color: #333744;
  .el-menu {
  border-right: 0;
}
}
.el-main {
  background-color: #eaedf1;
}
.toggle-button {
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  text-align: center;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}
.iconfont{
  margin-right: 10px;
}
</style>
